The FBI interviewed Hillary Clinton Saturday morning in
connection with the ongoing investigation into her use of a
private email server as secretary of state, the presumptive
Democratic presidential nominee's campaign said.

"Secretary Clinton gave a voluntary interview this morning about
her email arrangements while she was secretary," spokesman Nick
Merrill said.

He added: "She is pleased to have had the opportunity to assist
the Department of Justice in bringing this review to a
conclusion. Out of respect for the investigative process, she
will not comment further on her interview."

The interview occurred at FBI headquarters in Washington, DC, and
lasted approximately three and a half hours, a Clinton aide
said.

The FBI's interview came more than a year after
Clinton first admitted that she conducted official government
business using a personal email address instead of one
issued by the government.

Federal authorities began their investigation in August.

The FBI has been looking into whether classified material was
mishandled during Clinton's tenure at the State Department from
2009 to 2013. Reports indicate classified information
traversed her home server, but Clinton has maintained that such
messages were not classified at the time.

Clinton, who is weeks away from officially accepting the
Democratic Party's nomination for president at the party's July
convention, has maintained that using the private email server
was not illegal.

An inspector general's report
released in May appeared to back up Clinton's claim, but said
she "did not comply" with State Department policies requiring her
to surrender "all emails dealing with department business before
leaving government service."

Clinton has turned over tens of thousands of her work-related
emails over the course of the investigation. About 30,000 more
emails that were deemed "personal" were deleted.